GW Security HD IP 4 Channel NVR Security System with 2 IP PoE 1080P Security Cameras, 500GB HDD Full 1080P Real-time Recording 4 Channel NVR with (2) 1080P Max 5.0 Megapixel POE IP Cameras Power over Ethernet setup is clean and simple with a single network cable, built-P2P service and support ONVIF agreement and QR Code Scan Free mobile apps allow you to watch your system from anywhere with mobile viewing for Smartphones, tablets, PC, and Macs Features Wide Dynamic Range & 3D DNR giving you ability to see clearly in contrast lighting environment and sharper monitoring and playback Pre-installed 500GB Hard Drive with 1 Year Warranty and Free Life Time Tech Support From U.S.A.